package com.toman.http.service;


import org.apache.http.HttpResponse;
import org.apache.http.NameValuePair;
import org.apache.http.client.HttpClient;
import org.apache.http.client.entity.UrlEncodedFormEntity;
import org.apache.http.client.methods.HttpPost;
import org.apache.http.impl.client.DefaultHttpClient;
import org.apache.http.message.BasicNameValuePair;
import java.io.BufferedReader;
import java.io.ByteArrayOutputStream;
import java.io.DataOutputStream;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.io.OutputStream;
import java.net.HttpURLConnection;
import java.net.InetAddress;
import java.net.Socket;
import java.net.URL;
import java.net.URLEncoder;
import java.util.ArrayList;
import java.util.List;
import java.util.Map;



public class SocketHttpRequester {

    /**
     * 直接通过HTTP协议提交数据到服务器,实现如下面表单提交功能:
     * <FORM METHOD=POST ACTION="http://192.168.0.200:8080/ssi/fileload/test.do" enctype="multipart/form-data">
     * <INPUT TYPE="text" NAME="name">
     * <INPUT TYPE="text" NAME="id">
     * <input type="file" name="imagefile"/>
     * <input type="file" name="zip"/>
     * </FORM>
     *
     * @param path   上传路径(注：避免使用localhost或127.0.0.1这样的路径测试，因为它会指向手机模拟器，你可以使用http://www.itcast.cn或http://ic_launcher.168.1.10:8080这样的路径测试)
     * @param params 请求参数 key为参数名,value为参数值
//     * @param file   上传文件
     */
    public static boolean post(String path, Map<String, String> params, FormFile[] files) throws Exception {
        final String BOUNDARY = "---------------------------7da2137580612"; // 数据分隔线
        final String endline = "--" + BOUNDARY + "--\r\n";// 数据结束标志

        int fileDataLength = 0;
        for (FormFile uploadFile : files) {// 得到文件类型数据的总长度
            StringBuilder fileExplain = new StringBuilder();
            fileExplain.append("--");
            fileExplain.append(BOUNDARY);
            fileExplain.append("\r\n");
            fileExplain.append("Content-Disposition: form-data;name=\"" + uploadFile.getParameterName() + "\";filename=\"" + uploadFile.getFilname()
                    + "\"\r\n");
            fileExplain.append("Content-Type: " + uploadFile.getContentType() + "\r\n\r\n");
            fileDataLength += fileExplain.length();
            if (uploadFile.getInStream() != null) {
                fileDataLength += uploadFile.getFile().length();
            } else {
                fileDataLength += uploadFile.getData().length;
            }
            fileDataLength += "\r\n".length();
        }
        StringBuilder textEntity = new StringBuilder();
        for (Map.Entry<String, String> entry : params.entrySet()) {// 构造文本类型参数的实体数据
            textEntity.append("--");
            textEntity.append(BOUNDARY);
            textEntity.append("\r\n");
            textEntity.append("Content-Disposition: form-data; name=\"" + entry.getKey() + "\"\r\n\r\n");
            textEntity.append(entry.getValue());
            textEntity.append("\r\n");
        }
        // 计算传输给服务器的实体数据总长度
        int dataLength = textEntity.toString().getBytes().length + fileDataLength + endline.getBytes().length;

        URL url = new URL(path);
        int port = url.getPort() == -1 ? 80 : url.getPort();
        Socket socket = new Socket(InetAddress.getByName(url.getHost()), port);
        OutputStream outStream = socket.getOutputStream();
        // 下面完成HTTP请求头的发送
        String requestmethod = "POST " + url.getPath() + " HTTP/1.1\r\n";
        outStream.write(requestmethod.getBytes());
        String accept = "Accept: image/gif, image/jpeg, image/pjpeg, image/pjpeg, application/x-shockwave-flash, application/xaml+xml, application/vnd.ms-xpsdocument, application/x-ms-xbap, application/x-ms-application, application/vnd.ms-excel, application/vnd.ms-powerpoint, application/msword, */*\r\n";
        outStream.write(accept.getBytes());
        String language = "Accept-Language: zh-CN\r\n";
        outStream.write(language.getBytes());
        String contenttype = "Content-Type: multipart/form-data; boundary=" + BOUNDARY + "\r\n";
        outStream.write(contenttype.getBytes());
        String contentlength = "Content-Length: " + dataLength + "\r\n";
        outStream.write(contentlength.getBytes());
        //String userAgent = "User-Agent: " + AppContext.getHandSetInfo () + "\r\n";//添加来源
        //outStream.write (userAgent.getBytes ());
//        String appKey = "AppKey: " + Constant.AppKey + "\r\n";//添加加密信息
//        outStream.write(appKey.getBytes());
        String alive = "Connection: Keep-Alive\r\n";
        outStream.write(alive.getBytes());
        String host = "Host: " + url.getHost() + ":" + port + "\r\n";
        outStream.write(host.getBytes());
        // 写完HTTP请求头后根据HTTP协议再写一个回车换行
        outStream.write("\r\n".getBytes());
        // 把所有文本类型的实体数据发送出来
        outStream.write(textEntity.toString().getBytes());
        // 把所有文件类型的实体数据发送出来
        for (FormFile uploadFile : files) {
            StringBuilder fileEntity = new StringBuilder();
            fileEntity.append("--");
            fileEntity.append(BOUNDARY);
            fileEntity.append("\r\n");
            fileEntity.append("Content-Disposition: form-data;name=\"" + uploadFile.getParameterName() + "\";filename=\"" + uploadFile.getFilname()
                    + "\"\r\n");
            fileEntity.append("Content-Type: " + uploadFile.getContentType() + "\r\n\r\n");
            outStream.write(fileEntity.toString().getBytes());
            if (uploadFile.getInStream() != null) {
                byte[] buffer = new byte[1024];
                int len = 0;
                while ((len = uploadFile.getInStream().read(buffer, 0, 1024)) != -1) {
                    outStream.write(buffer, 0, len);
                }
                uploadFile.getInStream().close();
            } else {
                outStream.write(uploadFile.getData(), 0, uploadFile.getData().length);
            }
            outStream.write("\r\n".getBytes());
        }
        // 下面发送数据结束标志，表示数据已经结束
        outStream.write(endline.getBytes());

        BufferedReader reader = new BufferedReader(new InputStreamReader(socket.getInputStream()));
        if (reader.readLine().indexOf("200") == -1) {// 读取web服务器返回的数据，判断请求码是否为200，如果不是200，代表请求失败
            System.out.println("请求返回状态码：" + reader.readLine());
            return false;
        }
        outStream.flush();
        outStream.close();
        reader.close();
        socket.close();
        return true;
    }

    /**
     * 提交数据到服务器
     *
     * @param path   上传路径(注：避免使用localhost或127.0.0.1这样的路径测试，因为它会指向手机模拟器)
     * @param params 请求参数 key为参数名,value为参数值
     * @param file   上传文件
     */
    public static boolean post(String path, Map<String, String> params, FormFile file) throws Exception {
        return post(path, params, new FormFile[]{file});
    }

    /**
     * 提交数据到服务器
     *
     * @param path   上传路径(注：避免使用localhost或127.0.0.1这样的路径测试，因为它会指向手机模拟器)
     * @param params 请求参数 key为参数名,value为参数值
     * @param encode 编码
     */
    public static byte[] postFromHttpClient(String path, Map<String, String> params, String encode) throws Exception {
        List<NameValuePair> formparams = new ArrayList<NameValuePair>();// 用于存放请求参数
        for (Map.Entry<String, String> entry : params.entrySet()) {
            formparams.add(new BasicNameValuePair(entry.getKey(), entry.getValue()));
        }
        UrlEncodedFormEntity entity = new UrlEncodedFormEntity(formparams, encode);
        HttpPost httppost = new HttpPost(path);
        httppost.setEntity(entity);
        HttpClient httpclient = new DefaultHttpClient();// 看作是浏览器
        HttpResponse response = httpclient.execute(httppost);// 发送post请求
        return readStream(response.getEntity().getContent());
    }

    /**
     * 发送请求
     *
     * @param path   请求路径
     * @param params 请求参数 key为参数名称 value为参数值
     * @param encode 请求参数的编码
     */
    public static byte[] post(String path, Map<String, String> params, String encode) throws Exception {
        // String params = "method=save&name="+ URLEncoder.encode("老毕", "UTF-8")+ "&age=28&";//需要发送的参数
        StringBuilder parambuilder = new StringBuilder("");
        if (params != null && !params.isEmpty()) {
            for (Map.Entry<String, String> entry : params.entrySet()) {
                parambuilder.append(entry.getKey()).append("=").append(URLEncoder.encode(entry.getValue(), encode)).append("&");
            }
            parambuilder.deleteCharAt(parambuilder.length() - 1);
        }
        byte[] data = parambuilder.toString().getBytes();
        URL url = new URL(path);
        HttpURLConnection conn = (HttpURLConnection) url.openConnection();
        conn.setDoOutput(true);// 允许对外发送请求参数
        conn.setUseCaches(false);// 不进行缓存
        conn.setConnectTimeout(5 * 1000);
        conn.setRequestMethod("POST");
        // 下面设置http请求头
        conn.setRequestProperty(
                "Accept",
                "image/gif, image/jpeg, image/pjpeg, image/pjpeg, application/x-shockwave-flash, application/xaml+xml, application/vnd.ms-xpsdocument, application/x-ms-xbap, application/x-ms-application, application/vnd.ms-excel, application/vnd.ms-powerpoint, application/msword, */*");
        conn.setRequestProperty("Accept-Language", "zh-CN");
        conn.setRequestProperty(
                "User-Agent",
                "Mozilla/4.0 (compatible; MSIE 8.0; Windows NT 5.2; Trident/4.0; .NET CLR 1.1.4322; .NET CLR 2.0.50727; .NET CLR 3.0.04506.30; .NET CLR 3.0.4506.2152; .NET CLR 3.5.30729)");
        conn.setRequestProperty("Content-Type", "application/x-www-form-urlencoded");
        conn.setRequestProperty("Content-Length", String.valueOf(data.length));
        conn.setRequestProperty("Connection", "Keep-Alive");

        // 发送参数
        DataOutputStream outStream = new DataOutputStream(conn.getOutputStream());
        outStream.write(data);// 把参数发送出去
        outStream.flush();
        outStream.close();
        if (conn.getResponseCode() == 200) {
            return readStream(conn.getInputStream());
        }
        return null;
    }

    /**
     * 读取流
     *
     * @param inStream
     * @return 字节数组
     * @throws Exception
     */
    public static byte[] readStream(InputStream inStream) throws Exception {
        ByteArrayOutputStream outSteam = new ByteArrayOutputStream();
        byte[] buffer = new byte[1024];
        int len = -1;
        while ((len = inStream.read(buffer)) != -1) {
            outSteam.write(buffer, 0, len);
        }
        outSteam.close();
        inStream.close();
        return outSteam.toByteArray();
    }
}
